Bottom spinning mechanism, including support for bottom for paper container making machines



May 8. 9 B. A. WITTKUHNS ETAL 2,744,455

BOTTOM SPINNING MECHANISM, INCLUDING SUPPORT FOR BOTTOM FOR PAPERCONTAINER MAKING MACHINES Original Filed April 26, 1951 6 Sheets-Sheet lFIGJ.

N TOR IN V BRUNO "4- WI TKU N5.

ATTORNE May 8. 1956 B. A. WITTKUHNS ET AL 2,744,455

BOTTOM SPINNING MECHANISM, INCLUDING SUPPORT FOR .BOTTOM FOR PAPERCONTAINER MAKING MACHINES Original Filed April 26, 1951 6 Sheets-Sheet 2[NV NTORS. BRUNO AW/T KUHNS. GILBERT F HILL.

9 TTORNE X A. WITTKUHNS ET AL 2,744,455

May 8, 1956 B BOTTOM SPINNING MECHANISM, INCLUDING SUPPORT FOR BOTTOMFOR PAPER CONTAINER MAKING MACHINES 6 Sheets-Sheet 3 Original FiledApril 26. 1951 Z0 1 R I 1 T c E? I 1;) I. IT j 217 I I L INVENTORS, WKUHNS.

BRUNO A.

GILBERT F- HILL- flTTORNE 2,744,455 BOTTOM SPINNING MECHANISM, INCLUDINGSUPPORTIFOR May 8, 9 B. A. WITTKUHNS ETAL BOTTOM FOR PAPER CONTAINERMAKING MACHINES Original Filed April 26, 1951 6 Sheets-Sheet 4 y 8. 1956B. A. WITTKUHNS ETAL 2,744,455

BOTTOM SPINNING MECHANISM, INCLUDING SUPPORT FOR BOTTOM FOR PAPERCONTAINER MAKING MACHINES Original Filed April 26. 1951 6 Sheets-Sheet 5E f; 1S 5557 I j l l 52 I 54'9 y 556 I? I 575 i mu I 566 3: I\567 5e 1574 ;\56a l 569 IN V EN TORS.

BRUNO A. W/TTKUHNS- 6115597 F-H/ll H 77' GENE Y May 8, 1956 B. A.WITTKUHNS ET AL 2,744,455

BOTTOM SPINNING MECHANISM; INCLUDING SUPPORT FOR BOTTOM FOR PAPERCONTAINER MAKING MACHINES Original Filed April 26, 1951 s Sheets-Sheet eINVENTORS GILBERT F HILL.

HTTOENEK BRUNO 14 WITTKUHNS.

United States Patent BOTTOM SPINNING MECHANISM, INCLUDING SUPPORTFORBOTTOM FOR PAPER CON- TAINER MAKING MACHINES Bruno Afwittkuhns,Summit, and Gilbert F. Hill, Madison, N. J., as'signors to NationalPaper Bottle (30., Inc, New York, N. Y.,:a corporation of New YorkOriginal application April. 26, 1951, Serial No. 223,011. Divided andthis application June 16, 1953, Serial No.

8 Claims. c1; 93--ss.1

Paper containers have, prior to this invention, been madeinvariousshapes and forms for holding milk, fruit juices and other liquidor free flowing materials. Certain of these previous paper containershave been formed to the general shape of glass"bottles,that is, a shapeor form including a cylindrical lower portion and a truncated conical,contiguous neckportion. Paper containers having the described shapeareparticularly desirable and convenient for the'packaging andtransportation or delivery 'of milkand other liquid products since suchcontainers are suited for fillingon existing standard glass bottlefilling equipment and may be' conveniently grasped. and carried at thetruncated neck portion thereof.

As shown in .theco-pending applications of Bruno A. Wittkuhns, H.George. D, Nutting, and Gilbert F. Hill, Serial No. 85,781, filed April6, 1949, now U. S. Patent No. 2,642,785, SerialNo. 85,782, filed April6, 1949, now U. S. Patent No. 2,642,784,, and Serial No. 85,783, filedApril 6. 1949, now'U. S.Patent No. 2,647,929, paper containerssimulating the shape of glass bottles may each be formed from arectangular blank and a curved blank, cut from respective continuouswebs or strips of paper, and paired for windingjtogether into acontainer body of double-ply -construction, with the curved blankproviding the truncated conical neck portion of the body .and'beinginterleavedduring .the winding operation with. the rectangularblankwhich forms the cylindrical portion in a manner to form a mid sectionaljoint. The paper, plies forming the container body. are bonded togetherby an adhesive layer sandwiched .therebetween, and the contracted end ofthe neck portion is spun over and shapedto form a reinforced mouthat'thatend of the container body for supporting and retaining aremovable closure, while the large or' bottom end of the container bodyis closed by.a bottom disc having a depending marginal skirt which isspun inwardly together with the ad- .jacent end portion of the containerbody to form a rolled bead sealing the bottom of the container body andproviding a reinforced supporting base. In order to stiffen orstrengthen the neck portion and to shape it. for closely 2 web or strip,and for applying adhesive to suitable areas of each arcuate blank andcrimping' the trailing 'end'portion of the blank as the latter is' fedor transported to a winding station; and a secondblank preparing'assembly, operating insynchronisi'n with thefir'st blank'preparingassembly, for applying printedma'tter to a continuous web or strip ofpaper at suitably spaced locations along the length thereof, forsuccessively cutting the printedweb or strip along spaced transverselines to provide rectangu lar blanks and simultaneously crimping thetrailingend portionof each rectangulaf blai1k,"-an"d for applyingadhe'sive to a suitable area of each rectangular'blankwhi'le feeding ortransporting such blank to the winding station in paired relation to a'corresponding arcuate blank. Such a'machine further-includes a firstmandrel supporting conveyor, preferably-in the form of'a turret, whichis indexed periodically and in synchronism'with the first and secon'dblank preparing assemblies to carry the pluralityof man'- drelssuccessively to and from dwelling position at a plurality of operatingstations disposed at spaced apart locations along the path of travel ofthe mandrels, as defined by the movement of the turret. These operatingstations in the order in which they are arranged include .the windingstation at which devices are located for winding each pair of arcuateand rectangular blanks fed ..thereto onto the mandrel then in dwellingposition'at the'winding station to form a wound container body on themandrel; a pressing station having a "device located there'at forpressing the wound container body on'the mandrel in dwelling position atthe pressing station to compress the midsectionalseam and thelongitudinal seam ofthetruncated conical portion of the container bodyand .thus provide a secure bond; a mouth spinning station at whichdevices are located for spinning-engagementiwith the contracted end ofthe container. body onithe mandrel in dwelling position at the spinningstationito form a reinforcing rolled bead at the mouth of the containerbody; and a stripping station at which devices are located for removingthe container body "axially from the mandrel in dwelling position at thestripping station. 'In order to facilitate the spinning operations whichform the reinforcing beads at the mouth end and'base'end of thecontainer body and to prevent burning of .the latter during such thepath of travel of the cells, as definedbythe movement of the turntable.The operating stations associated with the cell carrying turntable, inthe order in which :they are arranged, include a loading station alignedwith the stripping station associated with the turret so.that. a celldwelling at the loading station is in position to receivea containerbody as the latter is removed fromits supporting mandrel; a fluting,mouth shaping and glue applyingstation at which devices are locatedforsimultaneously forming longitudinal flutes in the neck portion. ofthe container body in the celldwelling atthe related station, initiallyshaping the bead at the. mouth of that container body so that aremovable closure will be retained. therein, and applying glue to theinner surface of that container body adjacent the base end thereof; abottompunching and inserting station at which devices are located forpunching circular blanks from a continuous .web orstrip of paper,forming each circular blank into a bottom member of cup-likeconfiguration and inserting the formed blank into the bottom end of thecontainer body in the cell dwelling at the bottom punching and insertingstation so that the skir or marginal wall portion of the bottom memberengages against the band of adhesive appplied to the container body atthe preceding station, and for completing the shaping of the head at themouth of the container body in the cell dwelling at the bottom punchingand inserting station; a bottom spinning station at which devicesembodying the present invention are located for spinning engagement withthe bottom end of the container body to roll the bottom end portiontogether with the skirt of the bottom member inwardly thus sealing thebottom of the container body and forming a reinforcing and supportingbase for the container body, and for supporting the bottom member inposition within the container body carried by the cell dwelling at thebottom spinning station during the performance of the bottom spinningoperation; and an ejecting station at which devices are located forpneumatically removing the container body from the cell dwelling at theejecting station.

A general object of the present invention is to provide a machine of thedescribed character capable of producing paper containers automatically,economically and without imperfections at high production speeds.

Another object is to ensure that the paper containers thus produced areuniformly of the same capacity, and particularly that the bottoms areinserted to the same depth in the base ends of the container bodies.

A specific object of the present invention is to provide a machine ofthe described character including a conveyor for carrying containerbodies having cup-shaped bottom members inserted in the base endsthereof to and from dwelling position at a bottom spinning station,devices at the bottom spinning station for spinning engagement with thebottom end of a container body at said station operative to roll theskirt of the bottom member and adjacent edge portion of the containerbody inwardly together to form a reinforcing and sealing rolled head atthe base end of the container body, and other devices at the bottomspinning station operated by pressure fluid to enter the container bodydwelling at said station through the month end thereof and to provide aninternal supporting platform for the bottom member during the bottomspinning operation.

Another specific object of the present invention is to provide a papercontainer making machine with devices at the bottom spinning station ofthe described character, and wherein the devices for spinning engagementwith the bottom end of a container body at said station include arotated spinning element and an umbrella plate movable axially relativeto the spinning element and operative to engage the container bottomfrom above and to hold the latter on the internal supporting platformduring the spinning operation so that the bottom is positivelypositioned relative to the container body.

In accordance with the present invention, the above and other objects,features and advantages are attained by providing a paper containermaking machine which includes a horizontal conveyor for carryingsuccessive container bodies to and from residence at a bottom spinningstation, with each container body having its base end uppermost and acup-shaped, bottom forming member inserted in the base end prior toarrival at the bottom spinning station. A bottom spinning assembly issupported above the conveyor at the bottom spinning station andcomprises a vertical shaft supported for axial and rotational movement,a spinning head on the lower end of the shaft and formed with a centralrecess, an umbrella plate supported from said shaft and fitting into thecentral recess of the spinning head, means operative in synchronism withthe mechanism driving the conveyor for displacing the shaft downwardlyto effect spinning engagement of the spinning head with the base end ofa container body at said station, resilient means continuously urgingthe umbrella plate out of the spinning head recess for steadyingengagement from above with the bottom member during the spinningoperation, means effective to withdraw the umbrella plate into thecentral recess of the spinning head when the shaft is raised to itsinoperative position, and means continuously rotating the shaft andspinning head. Further, a bottom support assembly is mounted below theconveyor at the bottom spinning station and comprises a plurality ofplatform supporting segments, a vertical segment supporting member, asupport link hingedly connected to each of said segments and pivoted onthe upper end of the vertical supporting member, means carrying thevertical supporting member to permit vertical reciprocation of thelatter between a lowered inoperative position in which said segments aredisposed below the mouth ends of container bodies on said conveyor and araised operative position in which the segments are extended into acontainer body residing at said station, actuating means for thesegments arranged to swing the latter between stowed, substantiallyvertical positions for extension through the mouth end of a containerand extended horizontal positions in which said segments define acircular platform, resilient means normally conditioning the segmentactuating means for disposing the segments in their stowed positions,pneumatic means for effecting vertical reciprocation of the verticalsupporting member in synchronism with the mechanism driving the conveyorso that said supporting member is disposed in its lowered inoperativeposition during movement of the successive container bodies to and fromresidence at the bottom spinning station and is raised to its operativeposition during the residence of a container body at said station, andpneumatic means operative to condition the segment actuating means fordisposing the segments in their horizontal platform forming positions inresponse to the movement of the vertical supporting member to its raisedoperative position.

The above and other objects, features and advantages of the presentinvention will be apparent in the following detailed description of aspecific embodiment, while the invention consists of the novelcombinations, arrangements of parts and details of construction setforth in the description and shown in the drawings and then moreparticularly defined in the appended claims.

In the drawings:

Fig. 1 is a front elevational view of a machine for making papercontainers which includes devices embodying the present invention;

Fig. 2 is a top plan view of the machine shown in Fig. 1;

Fig. 3 is a side elevational view of the machine shown in Fig. 1;

Fig. 4 is a fragmentary top plan view, with the lower turret partlybroken away, showing the several devices located below that turret;

Fig. 5 is a vertical sectional view of a bottom spinning device, takenalong the line 55 of Fig. 6, and on an enlarged scale;

Fig. 6 is a fragmentary, front elevational view illustrating themechanisms for actuating the spinning device of Fig. 5;

Fig. 7 is a vertical sectional view of a platform erecting device, takenalong the line 7-7 of Fig. 4, on an enlarged scale, and with the deviceshown in its retracted or inoperative position;

Fig. 8 is a fragmentary vertical sectional view, similar to Fig. 7, butwith the device shown in its extended condition;

Fig. 9 is a top plan view, on an enlarged scale, of the platformerecting device in the condition of Fig. 7; and

Fig. 10 is a top plan, on an enlarged scale, of the platform erectingdevice in the condition of Fig. 8.

Referring to the drawings, and initially to Figs. 1, 2, 3 thereof, amachine 10 of the described character in which the container bodies areformed is there seen to include a substantially rectangularwbase11-having twoupstanding support members 12 and 13- adjacentoneend:and;a=pedestal or support 14 substantially at the center-of thefront portion of the base. An L-shaped frame member 15 has one legextending forwardly, or-toward the viewer in Fig. 1, and mounted on thesupport members 12 and 13, and its other leg extendinglongitudinally'ofthe, base 11 to rest upon a lug 16' extending frompedestal 14. The continuous paper strip or web from which the arcuateblanks are formed is stored in the form'of a roll 17' which is rotatablymounted between brackets 18 extending forwardly from the support members12 and 13. The paper :strip is drawn off the .topi of roll 17 toward therear and is fed to a curved blank cutting assembly whichis mounted abovethe forwardly extending leg of frame'15 by an auxiliary frame :part 19and is generally 'indicated'by the reference numeral 20.

Positioned'after the curved blank cutting assembly 20, described above,is a separator-assembly100 constructed toperform a dual function. Theseparator assembly 100 first serves to dispose of the-paper scrap-sothat it will not interfere with thefurtheradvancing of the curvedblanks,and also serves to advance and swing or turn the .blanks to' therequiredposition for further movement .along a conveyor to the windingstation. Itis necessary -to swing'or turn'the curved blanks after theyhave been cut in order to satisfy the dual requirements of economy intheruseof paper, that is; cutting the blanks from the paper strip sothat a minimum of paper is wasted, and of efiiciency inholding theoverall dimensions of the machine to a minimum for easy installationandservicing.

A conveyor assembly 130 is .mountedon the longitudinally extending legof the frame'15 (Fig. l) to receive the curved'blank'after the latterhasbeen turned on the separator assembly 100 described above and thenadvances the curved blank to the winding station while glue is appliedto selected areas of the blank and the trailing end portion is crimped.

Since the curved blankis destined to form the frustoconical neck partofthe container and must be wound on the suitably tapered frusto-conicalportion of the mandrel 181 at the winding station, a problem ispresented in feeding the curved blank to the tapering surface of themandrel without'twisting or warping the blank. This is accomplished by aturntable assembly which feeds the curved blank along a circular pathina plane inclined relative to the horizontal so that the leading end ofthe blank tangentially approaches themandrel at the bottom of thelatter.

The operations of the cutting assembly, separator assembly, conveyorassembly and turntable assembly'are all integrated and synchronized tosuccessively cut curved blanks and advance the same to the take-up orwinding station in'position for winding on the frusto-conical portion ofthe mandrel -181 then residingat the winding station. While theseassemblies are successively performing the respective functions, othermechanisms are simultaneously operating during'each cycle to provide asuitably formed rectangular blank positioned at the Winding station inproper relation to the curved blank for winding I cuts the strip intorectangular sections or blanks while simultaneously crimping thetrailing end portion of each blank, applies glue to the trailing half ofthe upper surface of each blank and forwards the glued blanks to thewinding station while registering each blank longitudinally andlaterally relative to the corresponding one .of the :orbital pathfollowed: by the mandrels. .sembly 330 (Fig. 1) is disposed-at thepressing station .1 6 curved or arcuate=blanks and relativetothermandreiat the winding station.

The mechanism for preparing therrectangular. blanks is carried by acantilever support214 extending rearwardly from the central supportpedestal 14 (Fig. 3) andhaving brackets 215 atits rear end betweenwhicha rollof paper 216 is rotatablymounted. Upstanding frame members 217 and218 are mounted on the cantilever support 214, adjacentthe rear andforwardends, respectively, of the latter, and a printing unit-219 ispositioned between these frame members.

As seen in Figs. 1 and 2 of the drawing, an upperturret assembly 272 isrotatably mounted on a turret supporting frame 273 which extendslongitudinally of the base 11 and is supported at one end on the:central pedestal 14 .and at the other end one frame member.274zextendingupwardly from'the base at theend of .thelatter remote fromthe cutting assembly 20. For the present itis sufficient to state that.the turret is driven to provide for the rotation of the hub 276 throughan.angle of for each cycle'of .the machine, with the hub beingmaintainedfor a predetermined interval at an'indexed position duringeach .cycle.

A radially extending mandrel assembly 181 is mounted on each of the fourfiat side faces ofthehub 276 for swinging movement withthe latter alongan orbitalpath which lies ina vertical plane in front-of theframe 273.The axis of rotation of the hub is disposed so that, when each mandrelassembly 181 reaches the horizontal position extending toward theconveyor assembly- 130, that mandrel. assembly isthen at the. windingstation to have a rectangular blank paired with a curved 'blank woundthereon.

A winderassembly- 294 (Fig. 2) is located at the wind- .ing station andoperates torotate the mandrel in residence at that station and to guidea pair of rectangular and .arcuate blanks around the rotated mandrel toencase the latter in a container body of doublelayers of paper withvaninterlocked seam between the cylindrical and conical been wound uponthemandrel-tov form a container body encasing the mandrelshell, theturret'is rotated 90 in a .clockwise direction as viewed from thefronttonextposition the container body carrying.;mandrel at a pressingstation, which-station is located'at the topcenter of the A. pressingasand operates on the container body carried'by the mandrel .inresidenceat the related stationtopress together the doubled layers ofthecurved blank forming the conical portion of the body and to press thelower edge of the .at which station a rolled bead or rim is formed onthe end of the conical portion of the container body by a spinningoperation. However, in moving fromthe pressing station to the mouthforming station, each container body supporting mandrel 181 sweeps pasta Wax pot-assembly. 337

(Fig. 1) which applies paraflin or wax to'the container body adjacentits opposite ends to act as a lubricant during subsequent spinningoperations.

Amouth spinner assembly-345 (Figs. 1, 2 and 6) is located at the mouthforming station which is'diametrically opposed to the winding stationand'operates to form a rolled bead or rim on the conical end of thecontainer body carried by themandrel then residing at the'mouth spinningor formingstation.

After the rolled beador rim has been formed on the conical end of thecontainer body to define a mouth, the upper turret 272 is furtherindexed through 90 to position the container body supporting mandrel ata stripping or transfer station, at which station the mandrel extendsvertically down from the turret hub. A transfer assembly 366 (Fig. 1) islocated at the stripping or transfer station to remove the containerbody from the mandrel at that station.

A lower turret assembly, generally indicated by the reference numeral393 (Figs. 1 and 4), which receives the container body at the strippingor transfer station includes a turntable having a circular table portion394 and a depending, hollow base portion within which a king pin orfixed pedestal extends for rotatably supporting the turntable. The kingpin extends vertically from the base 11 of the machine and is positionedso that the six equally spaced container body receiving cells carried bythe turntable and each generally indicated by the numeral 397 andmounted on the turntable, travel along a. circular path which at thetransfer station is in vertical alignment with a. vertical line passingthrough the axis of rotation of the upper turret. While the drive of theupper turret is arranged to index it one-quarter of a revolution duringeach cycle of the machine, the drive of the lower turret assembly,having six equally spaced container body receiving cells 397, isarranged to index the turntable only onesixth of a revolution duringeach cycle of the machine.

Each of the cells 397 is formed to receive a container body in invertedposition and to prevent falling through of the body. The container body,when positioned in the cell, has its mouth end extending substantiallybelow the turntable and its base end extending above the top surface ofthe turntable. Further, each cell 397 preferably includes clamping meansfor holding the container body in the related cell and operative toproduce a moderate clamping action when the cell is located at a glueapplying, fluting and mouth shaping station, and a strong clampingaction while the cell is indexed to two subsequent stations at which abottom is inserted in the supported container and the mouth end of thelatter is further shaped or finished and at which the base end of thecontainer and the bottom are rolled together in a spinning operation,while the clamping means are completely released during residence of thecell at a following ejection station and at the loading or transferstation.

After receiving the container body at the transfer station, indicated atA in Fig. 4, the lower turret is indexed one-sixth of a revolution, in aclockwise direction as viewed from the top, to position the containerbody supporting cell 397 at the fiuting, mouth shaping and glue applyingstation, indicated at B in Fig. 4. A glue applying and anvil assembly416 (Fig. 2) is positioned above the turntable and a flute forming andmouth shaping assembly 417 (Fig. 4) is positioned below the turntable atstation B.

The glue applying and anvil assembly 416 and the flute forming and mouthshaping assembly 417 cooperate to apply a band of adhesive on theinternal surface of the container body at station B adjacent the baseend of the container body, to form axially extending flutes in theconical portion of that container body so that the conical portionassumes substantially the shape of a conventional glass bottle neck, andto roughly shape the inner surface of the rim or head at the month endof the container body to provide an annular groove destined to receiveand retain the periphery of a conventional bottle top or cap. Theseassemblies may be constructed in the manner disclosed in the UnitedStates patent application of Bruno A. Wittkuhns, H. George D. Nuttingand Gilbert F. Hill, Serial No. 85,782, filed April 6, 1949, or in themanner disclosed particularly in our co-pending application, Serial No.370,768 filed June 16, 1953, for Bottom Gluing and Fluting Mechanism forPaper Container Making Machines, or in any other manner suitable todeliver container bodies in the necessary condition to the devicesembodying the present invention.

When the operations performed at the fluting, glue applying and mouthshaping station B have been completed, the cell 397 carrying a containerbody is next moved to a bottom inserting and mouth shaping station C(Fig. 4) by further indexing the lower turret turntable one-sixth of arevolution. At this station, a bottom punching and inserting assembly484 (Fig. 2) is located above the turntable, while a second swagerassembly 485 (Fig. 4), is located below the turntable 394 to furthershape and smoothe the mouth of the container body.

The bottom punching and inserting assembly 484 at station C isoperative, during the residence of a container body receiving cell atthat station, to cut or punch a circular blank from a continuous paperstrip, to form or shape the circular blank into a cup-shaped bottomforming member having an upstanding peripheral flange, and then toinsert the cup-shaped bottom forming member into the base end of thecontainer body with the peripheral flange of the bottom forming memberbeing in contact with the band of adhesive applied at the precedingstation.

The paper strip is fed to the bottom punching and forming assembly 484from a paper roll 539 (Figs. 1 and 2) rotatably mounted at the adjacentend of the machine by a feeding device 540 (Fig. 2) which intermittentlyadvances the paper strip during the indexing of the lower turret 393.

The next indexing movement of the lower turret turntable 394 carries thecontainer body having a bottom member inserted therein from the bottompunching, forming and inserting station C, at which the mouth is alsofurther shaped, to a bottom spinning station D (Fig. 4), at which thebase edge portion of the container body and the flange of the bottommember are rolled together by devices embodying the present invention toform a sturdy and leak-proof rolled joint which serves as a support basefor the completed container.

To perform this function, a bottom spinner assembly 549 (Figs. 1 and 5)is disposed above the lower turret turntable, and a bottom erectorassembly 550 (Figs. 4, 7, 8, 9 and 10) is disposed below the turntable,both assemblies being located at the bottom spinning station D. Thebottom spinner assembly 549 includes a vertically arranged housing 551formed with a bracket 552 thereon secured on the front face of theturret supporting frame 273 and having a vertically reciprocatablebearing barrel 553 therein. A vertical shaft 554 is rotatably mounted inthe bearing barrel 553 for axial movement with the latter and has abottom spinner 555 fixed on the lower end thereof. The upper portion ofthe shaft 554 extends slidably through a rotatable driving sleeve 556and is keyed to the latter. A driving pulley 557 is fixed to the drivingsleeve 556 and is engaged by a belt 558 extending over a pulley 559 onthe shaft of an electric motor 355 which also drives the mouth spinningassembly 345 and over an idler pulley 560 carried by the frame 273 (Fig.6).

The bottom spinner 555 is formed with a circular groove 561 and aconcentric circular recess 562 in the bottom face thereof and the shaft554 is formed with, a central bore 563 opening downwardly into thecircular recess 562 of the bottom spinner. A push rod 564 is slidable inthe central bore 563 of the shaft and at its lower end rotatably carriesan umbrella plate 565 formed to fit into the circular recess 562 whenthe push rod is raised. A spring 566 is positioned within the centralbore 563 and engages the upper end of the push rod 564 to resilientlyurge the umbrella plate 565 to a downwardly projecting position relativeto the spinner 555, with a radial pin 567 extending from the push rodand through an elongated slot in the shaft 554 to engage the bottom ofthe slot and thereby limit the downward movement of the umbrella plate565.

Arocker 568-.is-pivoted onthe shaft 554. and is"engage- :ableZ-at oneside with the radial pinr567 onthe push rod and at'itsother'side with afixed guidemember'569 to withdraw the umbrellaplate Withinthe circular"recess of the spinner 555 when the spinner is inits raised position. I1

1 Axial reciprocation of the bearing barrel for moving the spinner 555'into and out of spinning engagement with the'base or bottom end of thecontainerbody is effected by-a bell-crank 570'wlrich is rocked by'a'link-571extend- ;ing from a rocking lever 357 ofr-themouth spinningassembly 345 and-connected by links 572 to trunnions 573 extendingradially from thebearingbarrel 553 through longitudinal slots 574 in theh'ousing SSI.

The rocking lever 357' carries a cam follower roller (Fig. 6) whichengages the periphery of a suitably rotated cam '361 so;;that, as thecam rotates in synchronisrn with the indexing movement of the turntable393, the bottom spinning assembly 49-is manipulated.

During indexing of the lower turret turntable 394 the spinner-555 is inraised position and the umbrellapla-te 565 is Withdrawn within therecess 562 of the'spinner. During thedwellinterval of the turntable, thespinner 555' is moved downwardly, and-as it moves downwardly, theumbrella plate 565 projects from the spinner to .engage the bottommember of the container body in residence at the'bottom spinningstation.

The rotated spinner then receives the upperor base edges of the con.tainer body and of the flange of the bottom member in pits circulargroove '561 and rolls the edges inwardly to body in residence-atthebottomspinningstation Dwhile ;-upwardly from: the base'587 of the-aircylinder.

, the base end of the air cylinder.

.thespinnerSS'S is rolling'the'base edges thereof. The

bottom-erector assembly includes a vertical air cylinder 575 having-ahead 576 through whicha hollow tube'577 slidably' extends. A sleeve5-18'is fixedly mounted on the upper end of the'hollow tube 577' andpivotally carries six fingers 579 which are supported at the lower endsthereof for swinging in radial planes. Each' finger supports -.a sectorplate 580 at its rupper endofor.swinging betweenra contracted orstowed'position- (Fig. 7) in which eachsector plate 580 lies substantially flatra'gainst a side of thesupporting finger-579 andanactive position (Figs. -8-:and 10) in which the sector plates arehorizontal and cooperate to provide a circular platform.

,The supporting fingers 5 79 areactuated by a cam rod 581 which isformed to swing thefingers-outwardly when the cam rod is raised relative.to the sleeve. 578 and to retract the fingersto'axiallyextendingpositions when the .cam rod is lowered relative tothe .sleeve. The cam rod 581 includes a collar 58-2on its upper endwhich engages when the cam rod-is lowered to move the .fingers to their1 axially extending, or vertical, stowed. positions (Fig 7 Duringindexing of-the-lower turret turntable 394, the khollowshaft 577 is,lowered position, as is the cam rod-581relative 'to the sleeve-578, sothat the fingers- 5'79 and sector plates 580 are compactlyarrangedzbelowthe path in travel of' the mouthportionsioficontainerbodiescariied'byq'the' turntable. When thetur'ntable-is in the condition erdwell, the "tube or shaft 571 is moved upwardly to extendthrough-therelatively small-opening of the mouth of the container: bodyin-residence-at the bottom spinning station D. After thefingers andsector plates have passed, in'theircompactly arnanged condition;throughthe restricted mouth' opening, the cam r-od53l is raised relativeto thehollow shaft-and sleeve tospread our the sector' platesi andsform.a;.supporting platform .bel'owthe bottom member'of the containerbody,fithus fixing the position of the bottom member inthe container toprovide completed containers ofuniform-capacity.

In the illustrated device; the necessary movements of the hollow shaft577 and of the cam rod-581- are achieved pneumatically. For thispurpose, a base'5'87 'on the cylinder 575 and the head'576'thereof areprovidedwith compressed air supplying andexhausting passageways 588 and589, respectively, to sele'ctively'admitand exhaust compressed air aboveandbelowra packing assembly59ll at the lower end ofthe hollow'tube-577.Thepacking assembly 590 is formed Witha central-bore-form'ed toreceive'and be sealed by a 'me'tering' tube 591 extending To raise theh'ollow-tube-577,-compressed tair is admitted to movement of thehollowtube, 'themeteringtube' 591 pre- .ven'ts -flow of compressedair.into the interior of the hollow tube 577. However, when the lower end ofthe hollow tube 577 has clearedthe-upper end of the metering tube 591,the compressed-air then enters the hollow tube to' act upwardly againsta packing assembly592 on the lowenend of the cam-rod-5-81 and therebyraise the latter against .the. force of a return spring 593. 'Thus, thesectorplates are moved through thecontainer-mouth in a compactlyarrangedcondition,-.an'd only, when disposed in the wider portion of thecontainer, are the sector; plates opened'to provide. thetsupportingplatform.

In lowering or returning the sector plates to the'inop- -erativeposition, compressed .air is admittedito the top -of-..the air cylinderwhile .the base end of the latter -is exhausted. :The spring593 lowersthe cam rod 581 to retract the, sector plates-asset forthabove and thenthe compressed air moves the hollow shaft 57 7 downwardly to withdrawthe sector plate assembly through the container mouth.

- The flowof compressed air to the-air'cylinder575 is suitablycontrolledto 'eifect't-he-desired movementsof the .erector. assembly550-in synchronism with the indexing movement and'dwell interval ofthelower turret turntable Furtherindexingof zthelower turret turntablecarries the completed container body, mouth down position, fromthebot'tom spinning station D to the container body ejecting station'E(Fig.4), at which stationthe container .body ispneu'matically removedupwardly from its supporting cell by anejecting'assembly'594 therelocated .below the turntable 394.

It' will bexnoted that, although the turntable has six cells. thereonand-is indexed one-sixth of a revolution-during each cycleof themachine, only five operating stations. areprovidedwalong the circularpath of travel of the, cells. The sixthstation F. (Riga-4), followingthe 'ejectingzstationE, is utilized-asan inspection or detectingstationfordeterminingwhether the cell is empty and in. condition toreceive a container body at the subsequent transfer or] loading station-A.

' From-the foregoing, it will be apparentthat the bottom forming member;in each container is securely held on During initial upward whichoperates to deliver container bodies of the same character to a bottomspinning station.

While a preferred embodiment of the present invention has been describedand shown in detail, by way of illustration, it is to be understood thatthe invention is not limited to that precise embodiment, and thatchanges and modifications, obvious to one skilled in the art, may bemade therein without departing from the scope and spirit of theinvention.

What is claimed is:

1. In a bottle shaped container forming machine of the describedcharacter having a turntable mounted to rotate in a horizontal plane, aseries of container body receiving cells arranged in circumferentiallyspaced relationship around the peripheral portion of the turntable,several stations arranged successively in spaced relationship adjacentthe path of travel of the cells, and including a loading station and abottom spinning station, driving mechanism associated with the turntableto effect stagebystage advance of the cells to and from residence at thesuccessively arranged stations, and mechanism at the loading stationoperating in synchronism with the driving mechanism to project a woundcontainer body into each cell, with the bottom of the container bodyuppermost, during the residence of the cells at the loading station;devices at the bottom spinning station comprising a bottom spinningassembly supported above said turntable and including a vertical shaftsupported for axial and rotational movement, a spinning head on thelower end of said shaft and formed with a central recess, and anumbrella plate rotatably supported from said shaft and fitting into saidcentral recess, means operative in synchronism with said drivingmechanism for displacing said shaft downwardly to eifect spinningengagement of said spinning head with the base end and adjacent skirt ofthe bottom member of a container in a cell residing at said bottomspinning station, resilient means continuously urging said umbrellaplate downwardly out of said recess for steadying engagement from abovewith the bottom member during the spinning operation, means effective towithdraw'said umbrella plate into said recess when said shaft is raisedto its inoperative position by said operating means, means continuouslyrotating said shaft, a bottom support assembly mounted below saidturntable and including a plurality of platform supporting segments, avertical segment sup porting member, a support link hingedly connectedto each of said segments and pivoted on the upper end of said verticalsupporting member, means carrying said supporting member to permitvertical reciprocation of the latter between a lowered inoperativeposition in which said segments are disposed below the mouth ends ofcontainer bodies in said cells and a raised operative position in whichsaid segments are extended into a container body in a cell residing atsaid bottom spinning station, actuating means for said segments arrangedto swing the latter between stowed, substantially vertical positions forextension through the mouth of a container and extended horizontalpositions in which said segments define a circular platform, resilientmeans normally conditioning said actuating means for disposing saidsegments in said stowed positions, pneumatic operating means foreffecting vertical reciprocation of said supporting member insynchronism with said driving mechanism so that said supporting memberis disposed in its lowered operative position during advance of saidcells to and from said bottom spinning station and is raised to itsoperative position during the residence of a container body at saidbottom spinning station, and pneumatic means operative to condition saidactuating means for disposing said segments in their horizontalpositions in response to the movement of said supporting member to itsraised operative position.

2. In a paper container making machine; the combination of a horizontalconveyor for carrying successive container bodies, having bottom formingmembers inserted in the base ends thereof, to and from residence at abottom spinning station with the base ends of the containers uppermost,erector assembly means disposed at said spinning station below saidconveyor and including collapsible platform forming means operative toenter a container residing at said station through the mouth end of thecontainer and to form a platform underlying the bottom forming member ofthe container, and bottom spinning assembly means disposed at saidstation above the conveyor and comprising a spinning head, means forrotating said spinning head, means for axially displacing said spinninghead into and out of spinning engagement with the base end of acontainer body during residence of the latter at said spinning station,a vertical shaft support for axial and rotational movement and havingsaid spinning head secured on the lower end thereof, said spinning headhaving a central recess in the lower surface thereof, and an umbrellaplate formed to fit into said central recess, means supporting saidumbrella plate from said shaft for axial and rotational movementrelative to the latter and including a stem having said plate rotatablymounted on the lower end thereof, said shaft having a downwardly openingaxial bore slidably receiving said stem, a compression spring in saidaxial bore of the shaft and abutting at its opposite end against theupper ends of said stem and axial bore, respectively, to continuouslyurge said umbrella plate downwardly out of said recess for steadyingengagement from above with the bottom forming member of a container atsaid station during the spinning operation, and means operative towithdraw said umbrella plate into said recess in response to the axialdisplacement of said spinning head out of spinning engagement with acontainer body at said station, said means operative to withdraw saidumbrella plate into the central recess including an axial slot in saidshaft communicating with said axial bore of the latter, a radial pinextending from said stem through said axial slot, a rockable actuatingmember pivoted on said shaft and engageable at one side from below withsaid radial pin, and a fixed abutment in the path of travel of the otherside of said rockable actuating member as the latter is displacedupwardly with said shaft and spinning head to rock said actuating memberin the direction causing upward displacement of said stem relative tosaid shaft.

3. In a paper container making machine; the combination of a horizontalconveyor for carrying successive container bodies, having bottom formingmembers inserted in the base ends thereof, to and from residence at abottom spinning station with the base ends of the containers uppermost,erector assembly means disposed at said spinning station below saidconveyor and including collapsible platform means operative to enter acontainer residing at said station through the month end of thecontainer and to form a platform underlying the bottom forming member ofthe container, and bottom spinning assembly means disposed at saidstation above the conveyor and including a spinning head, means forrotating said spinning head, and means for axially displacing saidspinning head into and out of spinning engagement with the base end of acontainer body during the residence of the latter at said spinningstation, said collapsible platform forming means including a series ofsegments which, when arranged co-planar, define a circular platform, andwherein said erector assembly means further includes a vertical segmentsupporting member, a support link hingedly connected to each of saidsegments and pivoted on the upper end of said segment supporting member,means carrying said supporting member for vertical reciprocation of thelatter between a lowered inoperative position in which said segments aredisposed below the mouth ends of container bodies on said conveyor and araised operative position in which said segments are extended throughthe mouth end of a container body at said station, actuating meansswinging said segments between stowed, substantially vertical positionfor extension through the mouth end of a container body and extendedhorizontal positions in which the segments define a circular platform,means normally conditioning said actuating means for disposing saidsegments in said stowed positions, means for effecting verticalreciprocation of said segment supporting member from said inoperativeposition to said operative position during the residence of a containerbody at said station, and means operative to condition said actuatingmeans for disposing said segments in their horizontal extended positionsin response to the movement of said segment supporting member to itsraised operative position.

4. In a paper container making machine; the combination according toclaim 3, wherein each of said support links is pivoted on said segmentsupporting member for swinging in a radial plane relative to the latterand each of said segments is hinged'on the related support link formovement relative to the latter in a plane normal to said radial planeof movement of the support link, and wherein said actuating meansincludes actuating links pivotally connected at their opposite ends tothe top of said segment supporting member and to the related segment ata location on the latter spaced from the hinged axis of the segment sothat the segments swing between their stowed and horizontal extendedpositions in response to radial swinging of said support links.

5. In a paper container making machine; the combination according toclaim 4, wherein said segment supporting member has an axial open endedbore therein, and said actuating means further includes a cam rodreciprocatable axially in the upper portion of said axial bore of thesegment supporting member and engaging portions of said support links tocause radial swinging of the latter in response to axial movement ofsaid cam rod.

6. In a paper container making machine; the combination according toclaim 5, wherein said means carrying the segment supporting memberincludes a vertical cylinder in which said segment supporting member isaxially telescoped, and wherein said means for effecting verticalreciprocation of said segment supporting member includes a packing onthe lower end of said segment supporting member for sealing engagementwith the inner surface of said vertical cylinder and means forselectively admitting pressurized fluid to said cylinder adjacent theupper and lower ends of the latter.

7. In a paper container making machine; the combination according toclaim 6, wherein said means normally conditioning said actuating meansfor disposing the segments in their stowed positions includes springmeans connected to said cam rod and yieldably urging the latterdownwardly relative to said segment supporting member.

8. In a paper container making machine; the combination according toclaim 7, wherein said means operative to condition said actuating meansfor disposing said segments in their horizontal extended positionsincludes piston means on the lower end of said cam rod for verticalreciprocation within said axial bore of the segment supporting member,and a metering rod extending upwardly from the bottom of said cylinderto enter into the lower end of said axial bore of the segment supportingmember and to seal said axial bore from communication with the interiorof said cylinder until said segment supporting member has been raised apredetermined distance and then to withdraw from said axial bore topermit the pressurized fluid to act against said piston means forraising said cam rod relative to said segment supporting member.

-References Cited in the file of this patent UNITED STATES PATENTS1,164,921 Caylor et al. Dec. 21, 1915 1,855,216 Bennett Apr. 26, 19322,181,816 Mundell Nov. 28, 1939 2,284,492 Mundell May 26, 1942

